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Multilayer composite coating for cutter, cutter and preparation method of cutter

A multi-layer composite and coating technology, applied in the field of cutting tools and their preparation, multi-layer composite coating, can solve the problems of large strain energy and difficult to form, and achieve the effect of low equipment requirements, improved hardness and high hardness

Active Publication Date: 2017-01-04
ARISON SURFACE TECH SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to Cr 0.32 A 0.68 The difference between the lattice constants of N and ZrN is too large (~12%), resulting in too much strain energy to form a fully coherent superlattice coating

Method used

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  • Multilayer composite coating for cutter, cutter and preparation method of cutter
  • Multilayer composite coating for cutter, cutter and preparation method of cutter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031]Deposition by physical vapor deposition method (see: Correlation between arc evaporation of Ti-Al-N coatings and corresponding Ti0.50Al0.50 target types, Surface & Coatings Technology, 275 (2015) 309-315)), using CrAl target, CrZr target and Zr target alternately Deposition "Cr 1-x al x N layer 2 to Cr 1-y Zr y N layer 3 to ZrN layer 4 to Cr 1-y Zr y Periodic variation trend of Cr in N layer 3" 1-x al x N / Cr 1-y Zr y N / ZrN / Cr 1- y Zr y N multi-layer composite coating, Cr 1-x al x The Al content in the N layer is controlled at 0≤X1-y Zr y The Zr content of the N layer is controlled at 0.30≤y≤0.70, Cr 1-x al x N layer 2, Cr 1-y Zr y N layer 3, ZrN layer 4 and Cr 1-y Zr y The single layer thickness of the N layer 3 is 3nm, 8nm, 4nm, 9nm in turn, after 250 cycles until the total thickness of the coating is 6.0 μm.

Embodiment 2

[0033] By physical vapor deposition method (see: Correlation between arc evaporation of Ti-A1-N coatings and corresponding Ti 0.50 al 0.50 target types, Surface & Coatings Technology, 275 (2015) 309-315) deposition, first depositing Cr on the tool substrate 1 using a CrAl target 1-x al x N transition layer 5, again in Cr 1-x al x On the N transition layer 5, the physical vapor deposition process is used to deposit "Cr 1- x al x N layer 2 to Cr 1-y Zr y N layer 3 to ZrN layer 4 to Gr 1-y Zr y Periodic variation trend of Cr in N layer 3" 1-x al x N / Cr 1-y Zr y N / ZrN / Cr 1-y Zr y N multi-layer composite coating, Cr 1-x al x N layer 2 The Al content in is controlled at 0≤X≤0.70, Cr 1-y Zr y The Zr content of the N layer is controlled at 0.30≤y≤0.70, the Cr 1-x al x N layer 2, Cr 1-y Zr y N layer 3, ZrN layer 4 and Cr 1-y Zr y The single-layer thickness of the N layer 3 is 2nm, 7nm, 3nm, and 10nm in sequence, and after 450 cycles, the total thickness of the...

Embodiment 3

[0035] By physical vapor deposition method (see: Correlation between arc evaporation of Ti-Al-N coatings and corresponding Ti 0.50 al 0.50 target types, Surface & Coatings Technology, 275 (2015) 309-315) deposition, deposition of "Cr 0.48 al 52 N layer 2 to Cr 0.50 Zr 0.50 N layer 3 to ZrN layer 4 to Cr 0.50 Zr 0.50 Periodic variation trend of Cr in N layer 3" 0.48 al 52 N / Cr 0.50 Zr 0.50 N / ZrN / Cr 0.50 Zr 0.50 N multilayer composite coating, where Cr 0.48 al 52 N layer 2, Cr 0.50 Zr 0.50 N layer 3, ZrN layer 4, Cr 0.50 Zr 0.50 The thickness of the N layer 3 is 6nm, 5nm, 4nm, 5nm in turn, after 150 cycles until the total thickness of the coating is 3.0 μm.

[0036] Cr prepared by the present invention 0.48 al 52 N / Cr 0.50 Zr 0.50 N / ZrN / Cr 0.50 Zr 0.50 The N multilayer composite coating has a single-phase cubic structure, and was obtained by the nanoindentation method (see: Correlation between arc evaporation of Ti-A1-Ncoatings and corresponding Ti-A1-Ncoa...

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Abstract

The invention discloses a multilayer composite coating for a cutter, the cutter and a preparation method of the cutter. The multilayer composite coating comprises multiple coating units deposited periodically and alternately, wherein each coating unit comprises a Cr(1-x)AlxN layer, a Cr(1-y)ZryN layer, a ZrN layer and a Cr(1-y)ZryN layer which are deposited sequentially and alternately, and x is larger than or equal to 0 and smaller than or equal to 0.70, and y is larger than or equal to 0.30 and smaller than or equal to 0.70. According to a preparation method, a physical vapor deposition and multi-target alternate deposition method is adopted for alternately depositing the Cr(1-x)AlxN layer, the Cr(1-y)ZryN layer, the ZrN layer and the Cr(1-y)ZryN layer on a cutter body through a CrAl target, a CrZr target, a Zr target and a CrZr target respectively, and the periodic alternately deposited Cr(1-x)AlxN / Cr(1-y)ZryN / ZrN / Cr(1-y)ZryN multi-layer composite coating is obtained.

Description

technical field [0001] The invention belongs to the technical field of material surface modification, and in particular relates to a multilayer composite coating for cutting tools, cutting tools and a preparation method thereof. Background technique [0002] As a protective material, CrAlN coating is widely used in cutting tools and molds. CrAlN is a metastable CrAlN coating with a cubic structure formed by replacing Cr in CrN with Al, and its crystal structure and mechanical properties will change with the change of Al content. When the face-centered cubic structure of CrN is maintained, the mechanical properties of the coating will increase with the increase of Al content. When the Al content exceeds the solid solubility of CrN, the structure of the coating will transform into AlN with a hexagonal structure, making its mechanical properties and Thermal performance drops significantly. [0003] As a protective material, CrAlN coating is often used in high-temperature occa...

Claims

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Application Information

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IPC IPC(8): C23C28/04
CPCC23C28/042C23C28/044C23C28/42C23C28/44
Inventor 毛昌海
Owner ARISON SURFACE TECH SUZHOU
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